55909476 has 72 divisors (see below), whose sum is σ = 170031680. Its totient is φ = 15132096.

The previous prime is 55909471. The next prime is 55909487. The reversal of 55909476 is 67490955.

It is a happy number.

55909476 is a `hidden beast` number, since 559 + 0 + 94 + 7 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (55909471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1051 + ... + 10626.

Almost surely, 2^55909476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55909476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85015840).

55909476 is an abundant number, since it is smaller than the sum of its proper divisors (114122204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55909476 is a wasteful number, since it uses less digits than its factorization.

55909476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11713 (or 11708 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 45.

The square root of 55909476 is about 7477.2639380993. The cubic root of 55909476 is about 382.3799751569.

The spelling of 55909476 in words is "fifty-five million, nine hundred nine thousand, four hundred seventy-six".